Apparatus or machine for grinding and polishing skate-runners.



P. H. KOERNER. APPARATUS OB. MACHINE PORGRINDING AND POLISHING SKATE RUNNERS.

APPLICATION FILED OUT. 5, 1909.

Patented Mar.8,1910.

4 SHEETS-SHEET 1.

F. 'H. KOERNER. APPARATUS 0R MACHINE FOR GRINDING AND POLISHING SKATE RUNNERS.

APPLICATION FILED 001 5, 1909.

Patented Mar. 8, 1910.

4 SHEETS-SHEET 2.

mm mm mm ATTORNEYS F. H. KOERNER. APPARATUS 0R MACHINE FOR GRINDING AND POLISHING SKATE RUNNBRS.

APPLIUATION FILED our. 5, 1909.

QMAUL "Patented a1-.'3,1910.

4 SHEETS-SHEET 3.

VENTOE; L j 1; KBETI\ET ATTORNEYS 'F. H. KOERNER. APPARATUS 0R MAGHINE FOR GRINDING AND POLISHING SKATE RUNNEES.

I APPLICATION FILED OUT. 5, 1909. 1

PA 1 1 Patented Mar. 8, 1910.

4 SHEETS-SHEET 4.

I lllll INVENTORJI I EYS ITED STATES PATENT onnrcn.

FERDINAND H. KOERNER, OF IRVINGTON,

NEW JERSEY, ASSIGNOB 0F ONE-HALF T0 was LoWENrnAUr.

APPARATUS 0R MACHINE FOR GRINDING AND POLISHING SKATE-RUNNERS.

' Specificatitm of Letters Patent.

Application filed OctobeifFfTHOB. Serial No. 521,151.

tain new and useful Improvements in Ap paratus or' Machines for Grinding and P01- ishing Skate-Runners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specification.

The present invention has reference, generally, to improvements in grinding and polishing machinery; and the present invention refers, more particularly, to a novel construction of machine which is particularly adapted for the grinding, polishing and finishing of skate-runners, and all, similar classes of work.

The invention has for its rincipal object to provide a simple and easily adjusted arrangement of grinding elements provided with means for regulating and controlling the bearing-pressure of said grinding elements upon the work operated upon, so that the work, such as skate-runners and the like, may be properly ground, .polished and finished without danger of burning or formance of said operation.

The invention has for its further object the provision of a novel and simple means for receiving and conveying the work, in a proper position to be operated upon, to and past. the grinding elements of the machine, so that the latter may perform their functions upon the work as it is fed through the machine.

Other objects of the present invention not at this time more particularly enumerated will be clearly understood from the following detailed description of my present in vention.

With these various objects of my present invention in view, the said invention consists, primarily, in the novel construction of machine for grinding. polishing and finishing skate-runners, and similar classes of work, hereinafter set forth; and, furthermore, this invention consists in the several otherwise injuring the same during the perbodlment of plate 10 t novel arrangements and combinations of varlous devices and parts, as well as in the details of the construction thereof, all of which will be hereinafter more fully described and then finally embodied in the clauses of the claims which are appended to and which form an essential part of this specification.

" The invention is clearly illustrated in the;

accompanying drawings, in which Figure l is aplan view of the novel con struction of grinding and polishing machine embodying the principles of mypres ent invention. Fig. 2 is a side elevation of the same, looking in the direction of the arrow 02- in said Fig. 1; and Fig. 3 is an end elevation of the same, looking in the direction of the arrow 3/ in said Fig. 1. Fig. 4

'is a detail view, partly in section and partly in elevation, of the conveying and feeding mechanism adapted to carry operated upon between the grinding ele ments'; Fig. 5'is a detail cross section, taken on line 5-5 in said Fig. 4C; and Fig. 6 is another detail cross section, taken on line 6-6 also in said Fi 4, both of said cross sections being vicwe in the direction of the arrows in said Fig. 4:.

Similar characters of reference are em plo yed in all of the hereinabove described views, to indicate corresponding arts.

the work to be Patented Mar. 8, 1910.

Referring now to the severa figures of the accom anying drawings, the referencecharacter lndlcates the complete machine for grmdlng and pollshing, showing one eminvention, the same comprising a suitably designed base or standard 8 provided at each end with bed-plates 9. .Pivotally mounted upon each bed-plate 9 is a carrier e same being provided with a downwardly projecting stud 11 which is adapted to project into a suitable opening therefor in said bed-plate 9. The said carthe principles of my present rier-plate 10 swings in a horizontal plane upon said bed-plate 9 with its stud 11 as a fulcrum. The means for securing said carrier-plate 10 in any adjusted position upon said bed-plate'9 comprises a curved slot 12 with which said bed-plate 9 is provided, and a nut and bolt 13 which is adapted to pass through said slot 12 and said carrier-plate 10, whereby the latter may be clamped in 7 its adjusted position. Extending upwardly ,from each of said carrier-plates 10 are a pair of vertical standards 14, the upper ends of which are provided with bearing-blocks 15, and journaled in the bearing-blocks of i sald standards 14 is a shaft 16'. Secured to the inner end of said shaft- 16, in any suitable manner, is a grinding-wheel 17, the

same being made of any desirable abrasive .material. .Said grindin -wheel 17 may be provided with a cham ered periphery 18,

. 16, preferably at a point midway between the standards 14, is a driving-pulley 19, by means of which power may be transmitted to said shaft 16,- that the same and its grinding-wheel 17 may be rotated. Extending outwardly from and preferably forming an integral part of said bearing-block 15 of the.

' rear or outer of the two standards 14 is an arm 20 which is provided at its free end with a suitably forked member 21. Pivotally secured within this forked member 21 is one end of a lever or arm 22 the horizontal plane which presses through the 101i ituinal axis. of said lever or arm coinci ing with the horizontal plane which passes through the longitudinal axis of the said shaft 16. The said lever or arm 22 is also providedat a oint between its fulcrum and its free end with a thrust-bearing or block 23, the same being provided with a bearing or seat' adapted to receive a semispherical or other suitable ivot -member 24 with which the outer en of said shaft 16 is provided. The free end of said lever or arm 22 is rovided with an eye-member 25 in which is slidably arranged the screw-threaded shank 26 of an eye-bolt,27, and arranged upon said shank 26 is an ad usting nut 28,

of its ends to the eye of said-eye-bolt 27 and by means of which the eye-bolt is moved through said eye-member 25. A coiled spring 29, of the pull type, is secured at one by means of its other end to an eyelet 30 formed in a stationary arm 31 which projects from and preferably forms an integral part of sald bearing-block 15 of the rear or outer one of the two standards -14. The ten"- sion of the said spring 29, may be increased or' diminished, by means of said screw 26 and nut'28, whereby the pressure-of the thrust-bearing or block 23 upon theend of the-shaft 16 will determine the pressure of the grinding. wheel 17 upon the work to be performed.'-

This arrangement assures the proper ,abrasive' pressure of the 'said grindingwheels 17 upon the work to be ground, polished or finished and eliminates the danger of burning or otherwise injuring said with said shafts.

work. The angle of approach of said grinding-wheels 17 to the work to be per formed is readily adjustable and regulated to the needs of the work in hand by swinging said carrier-plates 10 upon their studs or fulcrums 11, as will be clearly evident from an inspection of Fig. 1 of the accompanying drawings. Secured in a centrally located position upon said base or standard 8, and adapted to extend transversely across the machine is a supporting-me1nber 32, the same being held or secured in its proper position by means of a nut and bolt 33, and

extending upwardly from said supporting member 32 is a bracket or member 34. The upper end of said supporting member is provided with a pair of outwardly projecting bearing-supports 35, said bearing-supports being formed with cutaway or slotted portions 36. Arranged Within said cutaway or slotted portions 36 are the journals or studs .37 of a bearing block 38. The said supporting-member 32 is furthermore provided with bearing-portions 39, and mounted in said bearing-portions 39 and extending upwardly through said bearing-blocks 38 are a pair ofvertical shafts 40, said shafts being provided at their upper ends with shoulders 41. Secured upon the upper ends of said' shafts, so as to restupon said shoulders 41, are gripping rollers 42, the

same being rigidly secured upon said shafts 40 by means of the nuts'43, so as to rotate.

The said bracket or member 34 is furthermore provided at its upper and outer end with suitable ears or lugs 44 to which is pivotally secured a receivingmember 45. In like manner, said bracketmember 34 is provided at its upper and inner end with ears or lugs 46 to which is pivotally secured one end of a supportingbar 47 The other or outer end of said supporting bar 47 is provided with a pair of slotted link-plates 48 which are rigidly sccured to said plates. Pivotally secured between said link-plates 48, by means of a bolt and nut 49, is the tongue-like end 50 of an adjusting screw 51. Thesaid adjustingscrew 51 is operated to raise and lower said supporting-bar 47 and bring the same into proper operative relation with the grinding elements of the machine. To accomplish this, there is arranged upon this adjusting screw 51 a hand-wheel or nut 52 which, when revolved, is adapted to cause either an ascension or descension of the said adjnstin the hub 56 of said hand-wheel or nut 52. The said supporting bar 47 previously mentionedis provided with means for retaining skate-runner in proper position to be operated upon by the grinding elements of the machine, as the said skate-runner is pushed forward upon said supporting-bar 47 toward said grinding elements. This retaining means comprises a pair of longitudinally extending angle-irons or brackets 57 which project from the outer end of said supporting-bar 47 toward the grinding elements of said machine, 0ne upon each side of said supporting-bar, substantially as shown. The said angle-irons or brackets 57 are re tained in place by means of bolts 58 which pass transversely through said supporting bar 47 and through suitable slots 59 in said angle-irons or brackets 57. Nuts (30 are secured upon the free ends of said bolts 58 and a coiled spring 61 is arranged between each nut 60 and the side of a bracket or angle-iron 57. The horizontal flanges 62,

of said brackets or angle irons 57 are provided with a plurality of upwardly extending studs 63, spaced at suitable intervals and so arranged, that the studs 63 of one angle-iron or bracket 57 are in transverse alinement with the stud 63 of the opposite angle-iron or bracket.

Rotatably mounted upon each stud 63 is a roller or member 64, the same being preferably made so as to taper slightly from top to bottom. The means of securing said angle-irons or brackets 57 upon said supporting-bar 47, above described, permits of a proper retention of the said rollers 64 in upright positions with their top edges practically tangent with their transverse neighbor, but when a skate-runner is introduced between the roller-members of the respective angle-irons or brackets 57, then the same are pushed apart against the tension of the coiled springs 61. This serves to ereate a proper holding engagement of said roller: members with the sides ofthe skate-runner, whereby the same is retained upright and in a proper position to be operated upon by the grinding elements of the machine.

After a skate-runner, or the like, has been operated upon by the grinding elements of the machine, it passes between a .pair of guide-rollers 65 to and in contactwith the gripping rollers 42 which pull the ground skate-runner forward and forces the same into the runner-receiver 45, whence the run ner drops into a receptacle beneath or upon a belt-conveyer whereby it is removed or carried away, as desired. The said guiderollers 65 are mounted upon the stud-members 66 of a pair of levers or arms 67 pivotally secured between ears or lugs 68 uponopposite sides of said skate-runner supporting-bar 47. Secured to and between the lower ends of said levers or arms 67 is a tit coiled spring 69, said spring being arranged under tension between the said levers or arms, so as to push the lower ends thereof apart and consequently the rollers upon the upper end together until forced apart by the passing skate-runner. The'said grippingrollers 42 are revolved by means of their shafts 40, and

the bearing-blocks 38 of which by means of their studs or journals being slidably arranged in the cutaway or slotted portions 36 of the bearing supports 35, providea means for permitting a slight outward spring of the said vertical shafts 40 as the skatewith bevel-gears 74 which are secured upon the lower end-portions of the respective shafts 40. Secured upon onevend of said shaft 71 is a worm-wheel 75, the same meshing with a worm 76 suitably secured upon a transverse shaft 77 which is mounted 'in suitable bearing-brackets 78 secured upon one end of the standard or base 8. Secured upon the other end of said shaft 77 is a bevel-gear 7 9 which meshes with another bevel-gear 80 secured upon one end-portion of a shaft 81 rotatably mounted in a bracketbearing 82, also secured to said standard or base 8, and suitably secured upon said shaft 81 is a fast or driving pulley 83 and a loose pulley 84, for driving and operating the various shafts and the gears herein-above mentioned.

The operation of the machine, the constructionof which has thus been specifically set forth, will be clearly apparent from an inspection of the several figures of the accompanying drawings.

I am aware that changes may be made in the various arrangements and combinations of the several devices and parts, as well as in struction of the said parts, as illustrated in r the accompanying drawings.

I claim 2- 1. In a grindin and polishing machine. the combination with a base or standard, of a pair of carrier-plates pivotally mounted thereupon so as to be swung in a horizontal 'of oppositely facing grinding-wheels secured, respectively, upon theinner ends of said shafts, and means operating in connection with each of said shafts for regulating I and adjusting the abrasive pressure of said rinding-wheels upon thework to be performed, comprising means for pivotally v supporting'a lever, a thrust-bearing carried by said lever, adapted to engage with the outer end of said shaft, and an adjustable tension device for controlling and regulating the pressure of said thrust-bearing upon said shaft, substantially as and for the purposes set forth.

j 2.- In a grinding and polishing machine, the combination with a base or standard, of a pair of carrier-plates pivotally mounted thereupon so as to be swung in a horizontal plane,'meansfor securing said carrier-plates in their adjusted positions, bearing-blocks supported upon said carrier-plates, shafts in said bearing-blocks, driving-pulleys secured, respectively, upon said shafts, apair of oppositely facing grinding wheels secured, respectively, upon the inner ends of said shafts, and means operating in' connection with each of said shafts for regulating and adjusting the abrasive pressure of said rinding-wheels upon the work to be perormed, comprising an arm connected with one of said bearing-blocks, a lever pivotally secured to said arm, a thrust-bearing carried by said lever adapted to engage with the outer end of said shaft, a" second outwardly extending armconnected with said bearingblock, a coiled spring connected with the free end thereof, and an adjustable means for connecting the other end of said spring with the free end of said lever to regulate and control the tension of said spring upon saidlever and said thrust-bearing carried thereby, substantially as and forthe purposes set forth.

3. In a grinding and polishing machine,

the combination with a-base or standard, of a a pair of carrier-plates pivotally mounted thereupon so as to be swung in a horizontal plane, means for securing said carrier-plates in their adjusted ositions, bearing-blocks d carrier-plates, shaftsin said bearing-blocks, driving-pulleys secured, respectively, upon said shafts, a pair of oppositely facing grinding wheels secured, respectively, upon the inner'ends of said shafts, and means operating in connection with each of said shafts for regulating and" adjusting the abrasive. pressure of said rinding-wheels upon the work to be per-.-

ormed, comprising an arm connected with one of said bearing-blocks, a lever pivotally secured to said arm, a thrust-bearing carried by said lever adapted to engage with the for connecting/the other endof said spring with the free end of said lever to regulate and controlthe tension of said spring upon said lever and said thrust bearing carried thereby, comprising a screw shank connected with said spring and slidably connected with the free end of said lever, and an adjusting-nut upon said screw-shank, said nut bearin against the end of said lever, substantia y asand for the purposes set forth.

4. In a grinding and polishing machine, the combination witha base or standard, of rotatably mounted grinding elements, means for conveying} and guiding the work in proper position to said grinding elements, comprising a supporting member secured upon said base or standard, a bracket-member extending upwardly therefrom, a su porting bar pivotally connected with said bracket-member and extending outwardly between said grinding elements, a plurality of retaining roller-members, and means for operatively supporting the same in connection with said supportingwbar, substantially as and for the purposes set forth.

'5. In a grinding and polishing machine, the combination with a base or standard,

.of rotatably mounted grinding elements,

comprising a supporting member secured upon said base or standard, a bracket-member extending upwardly therefrom, a supporting ba'r pivotally connected with said bracket-member and extending outwardly between said grinding elements, a plurality of retaining roller-members, means for operatively supporting the same in connection with said su porting-bar, and means for adjusting sai supporting-bar with relation to said grinding element, substantially as and for the purposes set forth.

6. In a grinding and polishing machine,

the combination with a base or standard, of

rotatably mounted (grinding elements, means for conveying an proper position to said grinding elements, comprising a supporting member secured upon said base-standard, a bracket-member extending upwardly therefrom, a supportguiding the work in ing bar pivotally connected with said! bracket-member and extending outwardly between said grinding elements, angle-irons upon each side of said supporting bar, a plur'ality of bolts extending through said supporting bar and the respective angle-irons, nuts on the free ends of said bolts, coiled springs arranged between saidnuts and said gle-irons, a lurality of vertical studs eonnected'with t e flange of said angle-irons, and rollers arran ed upon said studs, substantially as and or the purposes set forth. 7. In a grinding and polishing machine the combination with a base or standard, of rotatably mounted inding elements, means for conveying an guiding the work in proper position to said grinding elements, comprising a supporting member secured upon said base-standard, a bracket-member extending upwardly therefrom, a supporting' bar pivotally connected with said bracket-member and extending outwardly between said grinding elements, angle-irons upon each side of said supporting-bar, a plurality of bolts extending through sa1d supporting bar and the respective angle-irons nuts on the free ends of said bolts, coile springs arranged between said nuts ,and said angle-irons, a plurality of vertical studs connected with the flange of said angleirons, rollers arranged upon said studs, and means for adjusting said supporting bar with relation to said grinding elements, substantially as and for the purposes set forth.

8. In a grinding and polishing machine the combination with a base or standard, of rotatably mounted grinding elements, means for conveying and guiding the work in proper position to said grinding elements, comprisingb a supporting member secured upon said ase or standard, a bracket-member extending upwardly therefrom, 'a su porting bar connected with sa1d pivotall racket-mem er an extending outwardly between said rinding elements, angle-irons u on each si e of said supporting bar,' a p urality of bolts extending through sa1d supporting bar and the respective an leirons nuts on the free ends of said bo ts, coile s rings arranged between said nuts and said angle-irons, a plurality of vertical studs connected with t angle-irons, rollers arranged npon sa1d studs, and means for adjustin sai supporting bar with relation to sai grinding elements, com rising a screw-shank pivotally connected w th the free end of said supporting-bar a hand wheel'arranged upon sa d screw-s ank, andmeans connected with said for conveying an grinding operate e flanges of said supporting-member for retaining said hand-- wheel in a' stationary position with relation to said supporting-member, substantially as and for the purposes set forth,

9. In a grinding and polishing machine the combination with a base or standard, 0 rotatably mounted inding elements, means guidingthe work in proper osition to sa1d grinding elements, means or carr g the work away from said grindin e ements when the same has been operate upon, said means comprising a pair of gripping rollers mounted on ver: tical shafts, a transmission means for rotatin said vertical shafts, and a receivingmem er, substantially as and for the purposes set forth.

10. In a grindingand polishingmachine, the combination with a base or standard, of rotatably mounted inding elements, means for conveying an? proper position to sa1d grinding elements means for carrying the work away fromsai elements when the same has been upon, said means comprisin a supporting-member secured uppn said ass or standard, a bracket-memb'er' extending upwardly therefrom, bearin -supports exten ing outwardly from sai bracket-member, sa1d bearing-supports being. provided with cutaway portions, bearing-blocks slidably arranged in said cutaway portions, bearings connected with said supporting-member, a pair of vertical shaftsirotatabl mounted in.

guiding the work in said bearing-blocks a (1 said earings connected with said su p rting member, gripping rollers secure u on the upper endportions of said vertica shafts, asystem' of shafting and gearing connected with sand base or standard for rotatin said vertical shafts and said grippin -rol ers, and a receiving member pivota y connected with said bracket-member adiacent to said gripping-rollers, substantial purposes set forth.

In testimony, that I claim the invention set forth above I have hereunto set my hand this 30th-day of Se tember, 1909.

. FERDIN ND H. KOERNER. I Witnesses:

' Freon. O. FRAENTZEL,

FREDK. H. W. FRAENTZEL.

y as and for the 

